<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script type="module">
        import {reactive} from './reactivity/index.js'

        const obj = reactive({
            foo: 'www',
            bar: 'bbb'
        })
        obj.foo = 'lll'
        delete obj.bar
        console.log(obj);
    </script>
</body>
</html>